Tenpin



Patented Feb. 6,1894.

(No Model.)

W. K RUMBEG K.

' TENPIN.

WITNESSES.' //W Unirse STATES VILLIM KRUMBECK, OF

BROOKLYN,y NEYV YORK.

TENPIN.

SECIFIGATION forming part of Letters Patent No. 514,323, dated February6, 1894. Application filed March 8, 1893. SerialNo. 465,070. (No model.)

.To @ZZ whom, t :n2/ay concern.-

Be it known that I, WILLIAM KRUMBECK, a citizen of the United States,and a resident of the city of Brooklyn, county of Kings, and State ofNew York, have invented a new and useful Improvement in Tenpins, ofwhich the following is a specilication.

My invention relates to an improvement in the tenpins now used in thegame designated as bowling.

The object of my improvement is to prevent the battering out of shape,the destruction of the equilibrium and the splintering, of the woodentenpins nowin use, which occur both in the body and base ofthe saidtenpins,caused after a short period of use by the impact of the heavylignumvitae balls now used in the game.

My invention consists of a metallic girdle secured to the tenpin in aposition to receive the concussion of the players ball with the tenpin,and also in providing the tenpin with a metallic base for purposeshereinafter described.

Figure l represents a side view of my improved tenpin, with myimprovements showing in section. Fig. 2 is a vertical section of a partof the body of my improved tenpin, showing one form of applying myimproved metallic girdle. Fig. 3 is a vertical section of a portion ofthe lower portion of a tenpin provided with the metallicbase for thetenpin I design to use.

In Fig. 1, A, represents a tenpin,B a girdle of steel, or other metal,forced upon the tenpin, while the said metallic girdle B is hot, of suchshape that its inner surface will align with the convex contour of theportion of the tenpin, on which it is placed, and resulting from thenatural laws, following the contraction of said metallic girdle whencooled, will tightly bind upon the portion of tenpin designed to beprotected from the impact of the players ball. The outer surface of thegirdle B, is also convex, but its curve is struck with a shorter radiusthan the 'inner surface as shown in Figs. l and 2, to provide anincreasd thickness of the girdle B on its center line, but to meet theinner curve, at the top and bottom lines of girdle B, forming a thinedge at their junction at the top and bottom of girdle B. Instead ofapplying the girdle B in a heated state as described and allowingit tobind upon the tenpinby contraction in cooling, I have also deemed itnecessary to mention that this girdle B can be forced to place whilecold, the elasticity of the forced on girdle holding it to place, and ifdesirable screws or through rivets be employed to hold it permanently inposition.

By the forcible displacement of the equilibrium of the tenpin, by theimpact of the players ball and sundryother causes the bases of thewooden tenpins also become badly chipped after a short usage, and willnot'allow the tenpins to stand truly vertical, so that a player cannottell whether the tenpins are truly spotted or not. To obviate this Ihave designed a metallic hase E made convex on its under portion F toincrease the stability of the su perincumbent pin, and having anupwardly and outwardly projecting flange G. The lower portion of woodentenpin is recessed circumferentially, enough, to receive this liange G,so that the outer face of flange G, will be in perfect alignment withthe con tour of body of tenpin, as best shown in Fig. 3. I fasten thismetallic base, to the lower annularly recessed portion of tenpin,byscrews passing through the convex portion of base E into the body oftenpin, and by through rivets H, passing through the flanged portion Gof base E as shown by dotted lines, in Fig. 3.

The girdle is designed preferably to be made of steel, not more thanone-eighth inch thick at its central and thickest portion. The base maybe cast of any amalgamation of metals giving toughness and ability tostand hard usage, as brass; cast iron being deemed unsuitable on accountof its brittleness.

By the attachment of my invention to old sets of tenpins they can bemade as stable and serviceable as when new.

Having thus described my invention, I claim as new and desire to secureby Letters Patentn l. A metallic girdle B, shrunk on the body of awooden tenpin, said metallic girdle being thickest at its medianportion, and running `to a thin edge at its top and bottom lines, in

combination with a metallic base E, secured to the lower portion of thesaid tenpin, having a convex portion F, integral with an annular flangeG, all substantially as shown and described.

2. A metallic girdle B, fastened to the body of a Wooden tenpin, itsinner surface aligning With the contour of the portion of tenpin onwhich it is placed, and its outer surface struck with a shorter radiusthan the inner surface, to provide an increase of the thickness of saidmetallic girdle on its median line, all, substantially as shown anddescribed.

3. In combination with a Wooden tenpin, a metallic base fastenedthereto, the said metallic base, being convex on its lower portion,

and provided with an annular flange, that is fitted in a circumferentialgroove, formed on the lowermost portion of the tenpin, the outer surfaceof said annular flange aligning with the contour of the lower portion ofthe body of the tenpin, al1 as shown and described.

In testimony that I claim the foregoing as my invention I have signed myname, in presence of two Witnesses, this 3d day of March, 1893.

WILLIAM KRUMBECK. Vitnesses:

HERMANN HILKER, RUDOLPH MINOR.

